{"indexes":[{"v":{"$numberInt":"2"},"key":{"_id":{"$numberInt":"1"}},"name":"_id_"},{"v":{"$numberInt":"2"},"key":{"model":{"$numberInt":"1"}},"name":"model_1","background":true,"unique":true}],"uuid":"2b463c0ce73d4b3388b39a92521d25f7","collectionName":"counters","type":"collection"}